Title:
高周波対応アンテナ用反射材料、及び高周波対応アンテナ用反射材料の設計パラメータの設定方法
Document Type and Number:
Japanese Patent JP4189697
Kind Code:
B2
Abstract:
A reflecting material for antennas containing a three-axis woven fabric usable for high frequency band ranging from 20 to 60 ÄGHzÜ. A reflecting material (1) for high-frequency band is fabricated by adjusting the weave density n, volume resistivity rho and denier eta of the three-axis woven fabric (2), without marring the merits of the three-axis woven fabric (2). In particular, parameters are set according to the composite model reflection factor GAMMA , which is the sum of a first reflection factor GAMMA s based on the surface resistance of the three-axis woven fabric and a second reflection factor GAMMA p based on the aperture portion of the three-axis woven fabric. It is preferable that the weave density n is about 5 to 28 Äyarns/inÜ, the denier eta is about 10 to 460 tex (g/1000 m), and the volume resistivity rho is about 0.7 to 2.0 x 10<-3> Ä OMEGA .cmÜ.
Inventors:
Akihito Watanabe
Application Number:
JP51768299A
Publication Date:
December 03, 2008
Filing Date:
September 18, 1998
Export Citation:
Assignee:
Sakase Adtech Co., Ltd.
International Classes:
H01Q15/14
Domestic Patent References:
| JP7226619A | ||||
| JP8307146A | ||||
| JP9170138A | ||||
| JP8209492A | ||||
| JP8130409A | ||||
| JP2038481U |
Foreign References:
| EP0961345A1 | ||||
| US4926910 | ||||
| US5440801 |
Other References:
Y. Rahmat-Samii and Shung-Wu Lee, ”Vector diffraction analysis of reflector antennas with mesh surfaces”, IEEE transactions on antennas and propagation, 米国, IEEE, 1985年 1月, Vol. 33, No. 1, pp. 76 - 90
W. A. Imbriale, V. Galindo-Israel and Y. Rahmat-Samii, ”On the reflectivity of complex mesh surfaces”, IEEE transactions on antennas and propagation, 米国, IEEE, 1991年 9月, Vol. 39, No. 9, pp. 1352 - 1365
W. A. Imbriale, V. Galindo-Israel and Y. Rahmat-Samii, ”On the reflectivity of complex mesh surfaces”, IEEE transactions on antennas and propagation, 米国, IEEE, 1991年 9月, Vol. 39, No. 9, pp. 1352 - 1365
Attorney, Agent or Firm:
Kazunobu Sera